Apparatus for coating edge regions of panels or boards

ABSTRACT

An apparatus for coating edge regions of panels comprising a slit for guiding said panel when passing said apparatus, said slit consisting of an upper and lower plate arranged to be pressed against said panel and means arranged to guide the position of the panel in relation to a sectioning slab mounted at the outlet end of said slit to adjust the thickness of the layer applied to the panel edge.

United States Patent 1191 Widigs et al.

[ 1 Nov. 12, 1974 1 1 APPARATUS FOR COATING EDGE 2354.777 11/1944 Schwartz 118/413 ON 0 NE 0 O S 2.860.597 11/1958 Works et al. 118/413 [76] Inventors: Sven Holger Widigs, Morbyvagen 13 78 1O Gustafs Sven-010i PI'HTIHI) E.\ammerLou1s K. Rimrodt Lindbergh, Tulpangatan 49, 703 53 A y I h Oreb o, bot of S eden {tor/1e Agent, 01 nm Murray Sc affer [22] Filed: May 11, 1972 [21] Appl. No.: 252,218 [57] ABSTRACT Foreign Application Priority Data An apparatus for coating edge regions of panels com- May 1 1, 1971 Sweden 6119/71 prising a slit for guiding said panel when passing said apparatus, said slit consisting of an upper and lower [52] U.S. Cl. 118/407 plate arranged to be pressed against said panel and [51] Int. Cl. B05c 3/02 means arranged to guide the position of the panel in [58] Field of Search 1 18/407, 413 relation to a sectioning slab mounted at the outlet end 1 of said slit to adjust the thickness of the layer applied [56] References Cited to the panel edge.

UNITED STATES PATENTS 2,026,521 1/1936 Dittmar 118/407 5 Claims, 2 Drawing Figures PAIENTEBNUV 12 \914 33341117 SHEET 10$ 2 FIG. I

PATENTEBHUV 12 I974 3.847.117

sum 20F 2 FIGZ APPARATUS FOR COATING EDGE REGIONS OF PANELS OR BOARDS The present invention relates to a method and an apparatus for painting and/or filling the edge regions of strips, panels or boards such as chipboards, plywood panels, so-called boards, etc. The object of the invention is to enable a treatment of the panels in a vertical position, which is of great importance since the aim of the invention is to effect an apparatus which can be used with existing feeders in equipmentfor treating panels or boards of the type mentioned, for example in edging machines of the type used in the timber industry or in specially constructed feeding machines.

The apparatus according to the invention comprises a container, one side of which is provided with a slit to hold the board or panel to be treated, the slit being limited by an upper tightening plate. Adjustable applicator means for guiding the edge of the board and to determine the thickness of the layer applied is provided as is a sectioning or wiper piece at the outlet end of the slit for insuring proper application, The slit is suitably limited by an upper and a lower tightening plate, at least the upper plate being spring adjusted so that it can be set to fit panels of different thicknesses. The sectioning or wiper slab is suitably adjustably screwed to the end of the container near the outlet end of the slit. The means to determine the thickness of the layer applied suitably consists of a pivotable shaft extending perpendicularly into the container to which an applicator tongue is fixed at its lower end which is pressed against the edge of the board. it also has a tongue at its upper end, which is adjustable by means of screws and, with the help of a scale, can indicate the position of the pressure applicator tongue located at the lower end of the shaft.

The invention will be described more fully in the following with reference to the accompanying drawing in which:

FIG. 1 shows, partly in broken perspective view, apparatus according to the invention; and

FIG. 2 shows a section of the apparatus taken along line 22 of FIG. 1.

As is clear from the drawing, the apparatus according to the invention consists of a container, one long side 2 of which is provided witha slit 3 open at the far side. This is limited on the upper side by a plate 4 which is supported by pins 5 arranged in brackets 6 on the ends 7 at each end side of the container. Above the bracket 6 a nut 8 is screwed on to the pin- 5 to limit the downward movement of the plate 4, the plate 4 being pressed in this direction by a spring 9 on the pin 5.

The slit 3 may also be limited on the lower side by a spring-loaded plate 11. In this way, the board 10 to be treated is passed between two plates pressed against the board. The material 12 which is to be applied on the board 10 is therefore prevented from leaking out of the container 1 about the upper and.lower faces of the board. r

The container 1 is provided at the top with a yoke 13 stretching across it and carrying a shaft pivotal about its axis 14 which has at its lower end an applicator comprising a pressure tongue 15 and at its upper end an adjustable tongue 16 which can be set with the help of two side screws 17,18, preferably in accordance with" an indicator scale 19 located on the yoke 13, The thickness of the layer to be applied on the edge 20 of the board 10 is obtained by adjusting the angular position of the pressure tongue 15 guiding the edge 20 of the board thereby obtaining a predetermined distance between the edge of the board 10 along a certain path with respect to a sectioning or wiper slab 21 located in the end piece 7 of the container 1. The sectioning slab 21 is suitably adjustable by means of screws in the container end 7.

The apparatus according to the invention functions in the following manner: The apparatus is connected to a feeding unit and the upper, spring-loaded plate 4 is raised and set in accordance with the thickness of the board 10 to be treated leaving open the slit 3 in communication with the interior of the container 1. it

should be ensured that the spring 9 can operate freely. The board 10 is then manually or mechanically inserted in the slit 3 between the plates 4 and 11 and the pressure tongue 15 is set at the desired value by means of.

the side screws 17 and 18 so that the filler or paint will flow between it and the edge 20 of the board. The container l is filled with filler or paint 12 and the process can be started. The feeding rate should be adapted to the viscosity of the material being applied and by way of example it may be stated that for a viscous material the feed rate may be selected at about 1,500 m/h and for pastelike material it may be about 1,000 m/h.

Thus, by adjusting the position of the tongue 15 the thickness of the layer applied can be determined. This tongue 15 at the same time serves to press the material into cavities in the edge of the board so that the material is compressed. The apparatus can also be adjusted so that a coating isobtained on theside faces of the board 10 as well, which is an advantage if the corners oftheboard 10 are damaged. In this case the sectioning slab 21 at the outlet end of the container must be specially shaped or profiled to surround the edge corners of the board. If onlythe edge 20 of the board is to be coated the sectioning slab 21 should have a straight wiping edge.

Extremely satisfactory results are obtained with the means according to the invention. The thickness of the layer applied can be exactly determined and, for'example, chipboards having a porous edge structure can in a single process be given a uniform and smooth coating I and, thanks to the pressure tongue 15, all cavities are well filled and the material injected will be well compressed. In fact, it has beenfound in practice that no after treatment of the layer applied is necessary.

There is no risk of the material 12 leaking out when a board 10 is inserted between the pressure plates 4 and 11 and when a board has been treated a sealing board can be inserted between said plates.

it should finally be pointed out that a means according to the invention can be arranged on each side of a board 10 so that this is treated simultaneously along both its long edges, which is of course a rational embodiment of the operation.

The invention is not limited to the example shown and described. Many modifications are feasible within the scope of the following claims. This applies, inter alia, to the journalling of the pressure plates 4 and 11, the journalling of the shaft 14 with the pressure tongue 15 and also the arrangements for the adjustment of this. Furthermore, the means proposed according to the invention may also be used for example for filling the edges of strips such as frames and skirting boards in the building industry.

We claim:

1. Apparatus for coating edge regions of panels or strips, such as chipboards, plywood panels, etc., comprising a container, one'side of which is provided with a slit arranged to hold and guide a board or panel to be treated, the slit being limited by a pair of plates adapted to engage the upper and lower faces of the board at least one of said plates being movable and resiliently biased to be pressed against the board, a wiper member located at the outlet end of the slit adjacent the edge of the board, and an applicator member arranged to engage the edge of the board within said container, said applicator member being adjustably mounted to guide the position of the board with respect to the wiper member and the edge of said board to adjust the thickness of the layer applied.

2. The apparatus according to claim 1, wherein the member comprises a pressure tongue fixed at the end of a pivotable shaft journalled in a yoke extending across the top of the container, said shaft having fixed at its upper end a tongue angularly adjustable by means of a pair of opposed side screws, and a scale for indicating the angular adjustment thereof.

3. The apparatus according to claim 1, wherein both plates limiting the slit are resiliently biased to be pressed against the board.

4. The apparatus according to claim 1 wherein the wiper member is adjustably mounted on said container with respect to the edge of the slit.

5. The apparatus according to claim 1 wherein said wiper member is shaped'to conform to the edge region 

1. Apparatus for coating edge regions of panels or strips, such as chipboards, plywood panels, etc., comprising a container, one side of which is provided with a slit arranged to hold and guide a board or panel to be treated, the slit being limited by a pair of plates adapted to engage the upper and lower faces of the board at least one of said plates being movable and resiliently biased to be pressed against the board, a wiper member located at the outlet end of the slit adjacent the edge of the board, and an applicator member arranged to engage the edge of the board within said container, said applicator member being adjustably mounted to guide the position of the board with respect to the wiper member and the edge of said board to adjust the thickness of the layer applied.
 2. The apparatus according to claim 1, wherein the member comprises a pressure tongue fixed at the end of a pivotable shaft journalled in a yoke extending across the top of the container, said shaft having fixed at its upper end a tongue angularly adjustable by means of a pair of opposed side screws, and a scale for indicating the angular adjustment thereof.
 3. The apparatus according to claim 1, wherein both plates limiting the slit are resiliently biased to be pressed against the board.
 4. The apparatus according to claim 1 wherein the wiper member is adjustably mounted on said container with respect to the edge of the slit.
 5. The apparatus according to claim 1 wherein said wiper member is shaped to conform to the edge region to be coated. 